Firestore for database + Chat SDK for chat in my App

1. Requirement I have a requirement to integrate chat functionality in my android app. This app has firestore backend with several collections like - Users, cities, etc.

2. What I have done so far User Signup / login : I use firebase for Google login /signup and create user in Firestore database.

   For Chat : I have used following from examples -

public void authenticateWithCurrentFirebaseLogin () {
       Disposable d = ChatSDK.auth().authenticate().subscribe(() -> {
           User currentUser = ChatSDK.currentUser();
           createThread("Test Chat",currentUser);
       }, throwable -> {
           Toast.makeText(this, "Error while authenticating with Chat SDK.",
                   Toast.LENGTH_SHORT).show();
       });
   }

This creates a User in Realtime database and starts a thread that results in opening a chat window. But, I think this is not the right way.

1. Android Version: 8.0.0

2. Questions:

How can I correctly execute chat screen between the current logged in user and selected user from list of Users(from firestore)? How do I load previous chat each time I come to the same user again?

Thanks, Kanak

[kanaksony]

Thanks @bensmiley this worked.

[bensmiley]

Great!